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2.5cc diesel day

Took a rest from building Team Racers today to run in some engines at the club field at Mannering Park, Lake Macquarie.

First a Mark 3 Oliver Tiger diesel built up from the crankcase.
I have assembled this engine around it and it's backplate. I was given a whole lot of Oliver spares a few years ago
It has new R4 and R6 bearings from ebay.

Many of the bits like the crank, rod and piston are from R250 production. The liner is original OT. The comp screw, is R250

The prop driver is modified CS tiger and the sleeve nut is R250. The cylinder fins are replacement OT, and the Venturi/banjo are Cox 09.

It runs strongly, is rather tight but started first flick.

The second pic shows my 1957 Taipan diesel. It's been rebuilt with a new piston and contra machined from 100 year old cast iron.

Again it's very tight but is running in nicely. It's destined for one of the c/l Aeroflyte designs designed around this engine and sold as kits during the 1960's.

RE: 2.5cc diesel day

G'day

Pity we don't have "smellavision" so we can smell the diesel fuel.

Anyway, nice pair of engines. Good to see an ABC (all bits collected) engine. Many years ago when I was racing Goodyear using Super Tigre G2015 diesels, I put together an engine from junk bits and pieces. The crankcase and shaft came from Hutton Oddy, and all the other bits from my own spares and junk parts. I still have it and it still runs well. It was made from parts which I had removed from other engines and it was a bit "loose" so it was known as Joe Superloose. We used it for ages in a little rat racer. It was not very powerful but it was deadly reliable and easy to start and won many races.

Cheers

Mike in Dubbo.

\"I just had no control. Must be the radio.\" Club Saito #597 Kadet Brotherhood #66

RE: 2.5cc diesel day

A mate got it for too much money (he says) and it only came with the pressure venturi. So first test runs produced ready burps but no sustained running.

Home & on the lathe, I made up a 3mm venturi (periferal jetting) for it and what a sweet little motor. I'm going to have trouble giving it back to the owner.

First flick starts and starting to smooth out. I don't think it's had too much running. By the time I had to call stumps it was too dark to get reliable tach readings. But was swinging a Taipan 8X4 with real authority. probably 12- 13K on moderate settings.

RE: 2.5cc diesel day

A mate got it for too much money (he says) and it only came with the pressure venturi. So first test runs produced ready burps but no sustained running.

Home & on the lathe, I made up a 3mm venturi (periferal jetting) for it and what a sweet little motor. I'm going to have trouble giving it back to the owner.

First flick starts and starting to smooth out. I don't think it's had too much running. By the time I had to call stumps it was too dark to get reliable tach readings. But was swinging a Taipan 8X4 with real authority. probably 12- 13K on moderate settings.

RE: 2.5cc diesel day

Hi there Fiery,

Long time lurker chimes in. I bought the four MVVS variants about 15 years ago whilst living in Germany, FI/RI glow/diesel. I can confirm that the steel liner (diesel) is interchangeable as is the glow abc liner.

I suspect that the Stella/abc liners are also able to be swapped between all versions but have never actually checked.

RE: 2.5cc diesel day

ORIGINAL: DerFly

Hi there Fiery,

Long time lurker chimes in. I bought the four MVVS variants about 15 years ago whilst living in Germany, FI/RI glow/diesel. I can confirm that the steel liner (diesel) is interchangeable as is the glow abc liner.

I suspect that the Stella/abc liners are also able to be swapped between all versions but have never actually checked.

DerFly

Well if that's true then the "generic" Rossi mk2 p/l should fit as well. There's a lot more of them around.

RE: 2.5cc diesel day

Slowly getting this old ED 246 Racer Mk III back to form. After initial runs bottom end was inspected. Bearings smooth, no play.

Conrod big end was loose on crankpin, as was little end and piston bosses on gudgeon pin. Big end now has a bronze bush. Top end a 4 mm gudgeon pin. Clearances now in spec.

Disc valve has been skimmed to remove scores on intake side. New pinion made to mount it.

Post rebuild engine now runs very nicely. A willing starter hot ot cold. Piston and liner are original. P&L fit is soft. There is leakdown at tdc. That said, when flicked this old warhorse is still "bouncy", hot or cold.

RE: 2.5cc diesel day

Here is my Taipan 2.5 cc diesel from the late 1950's on the test stand about a year and a half ago. It had not been run since about 1960. I got if for a Christmas present a couple years back. Just needed cleaning up and is in great shape. Jack